An AC charging pile and a charging control method

Abstract

The present invention provides an AC charging pile and a charging control method in the technical field of AC charging piles. The charging pile includes an MCU, a wireless communication module, a clock module, an ACDC module, an output control module, a relay, a CP detection module and a charging gun; the MCU is respectively connected to the wireless communication module, the clock module, the ACDC module, the output control module, the relay and the CP detection module; the pin CP of the charging gun is connected to the CP detection module, the pin CC is connected to the relay, the pins A, B, C, and N are connected to the output control module, and the pin PE is connected to the relay. The advantages of the present invention are: it realizes automatic release of the charging protection function, supports remote or timed charging control, and greatly improves the charging experience.

Description

Technical Field

[0001] The present invention relates to the technical field of AC charging piles, and in particular to an AC charging pile and a charging control method. Background Art

[0002] With the rapid development of electric vehicles, more and more people are choosing to buy more energy-saving and environmentally friendly electric vehicles, and the demand for charging piles is also increasing day by day. Due to the low cost and power of AC charging piles, as well as good safety protection and various performances, they are increasingly valued and favored by people. Individuals can use a relatively low cost to purchase a set of their own AC charging piles and install them in the community or their own garage.

[0003] With the explosive growth in the number of electric vehicle models, different manufacturers have different inspection standards for AC charging pile plugs. For example, some models have time requirements between plugging in the charging gun and starting charging. If the time is exceeded, charging is not allowed, while some models have no restrictions. In other words, some models have a charging protection function set up, while some models do not.

[0004] Traditional AC charging piles cannot automatically disable the charging protection function when facing electric vehicles with a charging protection function. The charging gun needs to be manually plugged in and out, and the charging of electric vehicles cannot be remotely or timed, which greatly affects the user's charging experience.

[0005] Therefore, how to provide an AC charging pile and a charging control method to automatically release the charging protection function and support remote or timed charging control to improve the charging experience has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an AC charging pile and a charging control method to realize automatic release of the charging protection function and support remote or timed charging control to improve the charging experience.

[0007] In a first aspect, the present invention provides an AC charging pile, including an MCU, a wireless communication module, a clock module, an ACDC module, an output control module, a relay, a CP detection module and a charging gun;

[0008] The MCU is respectively connected to the wireless communication module, clock module, ACDC module, output control module, relay and CP detection module; pin CP of the charging gun is connected to the CP detection module, pin CC is connected to the relay, pins A, B, C, N are connected to the output control module, and pin PE is connected to the relay.

[0009] Furthermore, the wireless communication module is at least one of a 2G communication module, a 3G communication module, a 4G communication module, a 5G communication module, a NB-IOT communication module, a LORA communication module, a WIFI communication module, a Bluetooth communication module or a ZigBee communication module.

[0010] In a second aspect, the present invention provides a charging control method for an AC charging pile, comprising the following steps:

[0011] Step S10: The MCU detects that the charging gun is inserted into the charging port of the electric vehicle based on the clock module, and charging has not been started after exceeding a preset first time threshold, and starts the charging protection function to limit the power output of the charging gun;

[0012] Step S20: Based on the received charging instruction, the MCU simulates the plugging and unplugging action of the charging gun through the relay to release the restriction of the charging protection function;

[0013] Step S30: After the MCU performs a self-check on the electric vehicle before charging through the CP detection module, the MCU transmits the power of the grid to the charging gun through the output control module, thereby charging the electric vehicle.

[0014] Furthermore, in step S10, starting the charging protection function to limit the power output of the charging gun is specifically:

[0015] The charging protection function is activated to disconnect the relay inside the output control module, thereby disconnecting the path between the charging gun and the power grid to limit the power output of the charging gun.

[0016] Furthermore, the step S20 is specifically as follows:

[0017] The MCU receives a charging instruction sent by a mobile terminal or a server through a wireless communication module, and parses the charging instruction to obtain a charging mode of instant charging or timed charging;

[0018] The MCU parses the charging mode to obtain the charging time, and when the charging time arrives, controls the relay to disconnect after a preset second time threshold, and then closes the relay to simulate the plugging and unplugging action of the charging gun, thereby removing the restriction of the charging protection function.

[0019] Furthermore, the step S30 is specifically as follows:

[0020] After the MCU determines through the CP detection module that the CP signal output by the electric vehicle meets the output requirements of the power grid, it closes the relay inside the output control module to connect the charging gun with the power grid, and then transmits the power of the power grid to the charging gun to charge the electric vehicle.

[0021] The advantages of the present invention are:

[0022] Since the AC charging pile determines the plug-in and unplug-out status of the charging gun by the on-off of CC and PE at the electric vehicle end, by setting the two ends of the relay to be connected to the CC and PE pins of the charging gun respectively, and the control end to the MCU, when the charging gun is inserted into the charging port of the electric vehicle, the MCU can switch CC and PE on and off by controlling the relay, thereby simulating the plug-in and unplugging action of the charging gun, without the need to manually plug and unplug the charging gun as traditionally; by setting the wireless communication module to be connected to the MCU, the MCU can remotely receive charging instructions sent by the mobile terminal or server through the wireless communication module, and the charging instructions carry the charging mode of instant charging or scheduled charging, which can control the charging gun to charge the electric vehicle immediately, or charge the electric vehicle on a scheduled basis, and finally realize the automatic release of the charging protection function, support remote or scheduled charging control, and greatly improve the charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0024] Figure 1 The present invention is a circuit principle block diagram of an AC charging pile.

[0025] Figure 2 It is a flow chart of a charging control method of an AC charging pile of the present invention. DETAILED DESCRIPTION

[0026] The technical solution in the embodiments of the present application has the following overall idea: the two ends of the relay are respectively connected to the pins CC and PE of the charging gun, and the control end is connected to the MCU. The MCU simulates the plugging and unplugging action of the charging gun by controlling the relay to switch CC and PE, so as to realize automatic release of the charging protection function; the wireless communication module is connected to the MCU to support remote charging control; the charging instruction is set to carry the charging mode of instant charging or timed charging to support timed charging control.

[0027] Please refer to Figures 1 to 2 As shown, a preferred embodiment of an AC charging pile of the present invention includes an MCU, a wireless communication module, a clock module, an ACDC module, an output control module, a relay, a CP detection module and a charging gun;

[0028] The MCU is used to control the communication, detection and logical operation of each internal module and the entire AC charging pile; the wireless communication module is used for remote wireless data exchange with the AC charging pile; the clock module is used for clock timing; the ACDC module is used to provide a DC low-voltage power supply to the AC charging pile so that the AC charging pile can work normally; the output control module is used to determine the indicators for accessing the power grid and control the on and off of the power grid; the relay is used to control the on and off of the CC signal on the charging line and the PE signal of the power grid, and is also the control signal for the electric vehicle to determine whether to plug in the charging gun; the CP detection module is used for information interaction control with the electric vehicle, that is, it is used to output and detect the PWM waveform required by the electric vehicle.

[0029] The MCU is respectively connected to the wireless communication module, clock module, ACDC module, output control module, relay and CP detection module; pin CP of the charging gun is connected to the CP detection module, pin CC is connected to the relay, pins A, B, C, N are connected to the output control module, and pin PE is connected to the relay.

[0030] The wireless communication module is at least one of a 2G communication module, a 3G communication module, a 4G communication module, a 5G communication module, a NB-IOT communication module, a LORA communication module, a WIFI communication module, a Bluetooth communication module or a ZigBee communication module.

[0031] A preferred embodiment of a charging control method for an AC charging pile of the present invention comprises the following steps:

[0032] Step S10: The MCU detects that the charging gun is inserted into the charging port of the electric vehicle based on the clock module, and the charging has not been started after exceeding the preset first time threshold, and the charging protection function is activated to limit the power output of the charging gun; the traditional AC charging pile needs to manually unplug and plug the charging gun again to release the charging protection function restriction;

[0033] Step S20: Based on the received charging instruction, the MCU simulates the plugging and unplugging action of the charging gun through the relay to release the restriction of the charging protection function. The detection of plugging and unplugging the charging gun of the electric vehicle is based on whether CC is connected to PE. If CC is connected to PE, it is judged that the charging gun is plugged in. If CC is disconnected from PE, it is judged that the charging gun is unplugged. Therefore, the restriction of the charging protection function can be released by switching CC and PE through the relay.

[0034] Step S30: After the MCU performs a self-check on the electric vehicle before charging through the CP detection module, the MCU transmits the power of the grid to the charging gun through the output control module, thereby charging the electric vehicle.

[0035] In step S10, the charging protection function is started to limit the power output of the charging gun as follows:

[0036] The charging protection function is activated to disconnect the relay inside the output control module, thereby disconnecting the path between the charging gun and the power grid to limit the power output of the charging gun.

[0037] The step S20 is specifically as follows:

[0038] The MCU receives the charging instruction sent by the mobile terminal or the server through the wireless communication module, and parses the charging instruction to obtain the charging mode of instant charging or timed charging; the charging mode of timed charging can be combined with the charging strategy of peak shaving and valley filling to save charging costs;

[0039] The MCU analyzes the charging mode to obtain the charging time, and when the charging time arrives, controls the relay to disconnect after a preset second time threshold, and then closes the relay to simulate the plugging and unplugging action of the charging gun, thereby releasing the restriction of the charging protection function. For example, the relay is disconnected for 5S and then closed to simulate the plugging and unplugging action of the charging gun.

[0040] The step S30 is specifically as follows:

[0041] After the MCU determines through the CP detection module that the CP signal output by the electric vehicle meets the output requirements of the power grid, it closes the relay inside the output control module to connect the charging gun with the power grid, and then transmits the power of the power grid to the charging gun to charge the electric vehicle.

[0042] In summary, the advantages of the present invention are:

[0043] Since the AC charging pile determines the plug-in and unplug-out status of the charging gun by the on-off of CC and PE at the electric vehicle end, by setting the two ends of the relay to be connected to the CC and PE pins of the charging gun respectively, and the control end to the MCU, when the charging gun is inserted into the charging port of the electric vehicle, the MCU can switch CC and PE on and off by controlling the relay, thereby simulating the plug-in and unplugging action of the charging gun, without the need to manually plug and unplug the charging gun as traditionally; by setting the wireless communication module to be connected to the MCU, the MCU can remotely receive charging instructions sent by the mobile terminal or server through the wireless communication module, and the charging instructions carry the charging mode of instant charging or scheduled charging, which can control the charging gun to charge the electric vehicle immediately, or charge the electric vehicle on a scheduled basis, and finally realize the automatic release of the charging protection function, support remote or scheduled charging control, and greatly improve the charging experience.

[0044] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An AC charging pile, characterized in that: It includes an MCU, a wireless communication module, a clock module, an ACDC module, an output control module, a relay, a CP detection module and a charging gun; The MCU is respectively connected to the wireless communication module, the clock module, the ACDC module, the output control module, the relay and the CP detection module; the pin CP of the charging gun is connected to the CP detection module, the pin CC is connected to the relay, the pins A, B, C, and N are connected to the output control module, and the pin PE is connected to the relay; The charging control method of the AC charging pile comprises the following steps: Step S10: The MCU detects that the charging gun is inserted into the charging port of the electric vehicle based on the clock module, and charging has not been started after exceeding a preset first time threshold, and starts the charging protection function to limit the power output of the charging gun; Step S20: Based on the received charging instruction, the MCU simulates the plugging and unplugging action of the charging gun through the relay to release the restriction of the charging protection function; Step S30: After the MCU performs a self-check on the electric vehicle before charging through the CP detection module, the MCU transmits the power of the grid to the charging gun through the output control module, thereby charging the electric vehicle.

2. The AC charging pile according to claim 1, wherein: The wireless communication module is at least one of a 2G communication module, a 3G communication module, a 4G communication module, a 5G communication module, a NB-IOT communication module, a LORA communication module, a WIFI communication module, a Bluetooth communication module or a ZigBee communication module.

3. A charging control method for an AC charging pile, characterized in that: The method requires the use of an AC charging pile as described in any one of claims 1 to 2, and comprises the following steps: Step S10: The MCU detects that the charging gun is inserted into the charging port of the electric vehicle based on the clock module, and charging has not been started after exceeding a preset first time threshold, and starts the charging protection function to limit the power output of the charging gun; Step S20: Based on the received charging instruction, the MCU simulates the plugging and unplugging action of the charging gun through the relay to release the restriction of the charging protection function; Step S30: After the MCU performs a self-check on the electric vehicle before charging through the CP detection module, the MCU transmits the power of the grid to the charging gun through the output control module, thereby charging the electric vehicle.

4. The charging control method of an AC charging pile according to claim 3, wherein: In step S10, the charging protection function is started to limit the power output of the charging gun as follows: The charging protection function is activated to disconnect the relay inside the output control module, thereby disconnecting the path between the charging gun and the power grid to limit the power output of the charging gun.

5. The charging control method of an AC charging pile according to claim 3, characterized in that: The step S20 is specifically as follows: The MCU receives a charging instruction sent by a mobile terminal or a server through a wireless communication module, and parses the charging instruction to obtain a charging mode of instant charging or timed charging; The MCU parses the charging mode to obtain the charging time, and when the charging time arrives, controls the relay to disconnect after a preset second time threshold, and then closes the relay to simulate the plugging and unplugging action of the charging gun, thereby removing the restriction of the charging protection function.

6. The charging control method of an AC charging pile according to claim 3, characterized in that: The step S30 is specifically as follows: After the MCU determines through the CP detection module that the CP signal output by the electric vehicle meets the output requirements of the power grid, it closes the relay inside the output control module to connect the charging gun with the power grid, and then transmits the power of the power grid to the charging gun to charge the electric vehicle.

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